These are lovely, crisp wallapaers, that are well executed and a pleasure to look at. Being a minimalist, and a fan of bright colors at the same time, these are right up my alley.
For those with dual screens of different sizes(like myself) its so nice to have well-scaling images for a desktop. Though I do not know if this was taken into concideration during development, I do greatly appreciate how it turned out.
I would however reccomend in a three color pack that the blue be a bit farther away from the green tones, or a bit more saturated. This particular shade of blue just dosent seem to hold its own against the vibrance of the green and red.
Overall, very lovely well designed and a pleasure to look at.